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Find the pH of the equivalence point and the volume (mL) of 0.0746 M KOH needed to reach the equivalence point in the titration of 23.4 mL of 0.0390 M HNO2.
If the heat of vaporization for Br2 is 29.6 kJ/mol and ΔS° for the vaporization is 88.9 J/mol⋅K, what is the boiling point for bromine?
the density of an unknown compound made from sulfur and oxygen is 2.47 x 10^-3 g/mL at 23 C and 76 kPa. what are the possible molecular formulas for the compound?
determine the mass of Carbon Monoxide produced when 0.64g of antimony(III) oxide reacts with carbon according to the following equation: Sb2O3 + 3C yields 2Sb + 3CO
Explain the pH change when the strong acid was added to the prepared buffer solution in relation to the pH of the buffer solution . Also indicate the change in the ph when the acid was mixed with the deionized water in relation to the deionized wa..
Water is present in air at 122 deg F and a total pressure of 14.696 psi in an amount such that the relative humidity is 50%. Water is removed by
Determine concentrations of Ca2+, HCO3-, CO32-, and H2CO3. Examine the charge balance and comment on what else your neighbor might be doing.
calculate the energy involved in the conversion of 272 g of steam at 373 K to ice at 243 K. Be sure to use the correct sign.
what is the significance of a limiting reactant? discuss how it is found and what it tells us about the amount of
How many moles of MgCl2 are present in 50.0 mL of 0.800 M MgCl2 solution?
If more than one alkene is possible, predict which one will be formed in the largest amount: a. 2-methyl-2-butanol b. 1-methylcyclohexanol
Write the balanced complete ionic equations and net ionic equations for the reactions that occur when each of the following solutions are mixed. (NH4)3PO4(aq) and CaCl2(aq)
What is the net ionic equation of the reaction of \rm ZnCl_2 with \rm NaOH
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